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Description

WeKan before 8.35 contains a server-side request forgery vulnerability in webhook integration URL handling where the url schema field accepts any string without protocol restriction or destination validation. Attackers who can create or modify integrations can set webhook URLs to internal network addresses, causing the server to issue HTTP POST requests to attacker-controlled internal targets with full board event payloads, and can additionally exploit response handling to overwrite arbitrary comment text without authorization checks.

PUBLISHED Reserved 2026-04-20 | Published 2026-04-22 | Updated 2026-04-23 | Assigner VulnCheck




MEDIUM: 6.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/SA:N

HIGH: 8.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Problem types

CWE-918 Server-Side Request Forgery (SSRF)

Product status

Default status
unaffected

Any version before 8.35.0
affected

2cd702f48df2b8aef0e7381685f8e089986a18a4 (git)
unaffected

Credits

Rodolphe GHIO finder

xet7 remediation developer

References

github.com/wekan/wekan/releases/tag/v8.35 release-notes

github.com/...ommit/2cd702f48df2b8aef0e7381685f8e089986a18a4 patch

www.vulncheck.com/advisories/wekan-ssrf-via-webhook-url third-party-advisory

cve.org (CVE-2026-41455)

nvd.nist.gov (CVE-2026-41455)

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